This paper describes the process of development of a didactical sequence to teach basic concepts of quantum mechanics in secondary school. Basically, the didactical framework adopted is described. The different conceptual structures that have to be developed to approach the problem of how to teach basic concepts of quantum mechanics starting from the student's knowledge, respecting the student's place (freedom) and inviting him to take his own responsibility, this implies creating an emotional dynamic of acceptance into the classroom. The Conceptual Structure of Reference that must be defined by the researcher is described. The researcher analyzes the conceptual relationships existing in the scientific community where knowledge is generated and that he will adopt as his frame of reference, also, he must take into account the community where that knowledge will be reconstructed and the knowledge transformations that will be necessary for teaching. Briefly, the Conceptual Structure Proposed to Teach is described and some results obtained during the scholar implementation of the CSPT, related to the conceptualization and viability of the sequence, are discussed in general.